Power-driven slush pump



Oct. 22, 1929. J, YQUNG 1,732,424

POWER DRIVEN SLUSH PUMP Filed April 20, 1928 2 Sheets-Sheet l INVENTOR. M avg/ 7 ATTORNEY.

Oct. 22, 1929.

J. A. YOUNG POWER DRIVEN SLUSH PUMP Filed April 20, 1928 2 Sheets-Sheet 2 411W NTOR. gm

ATTORNEY Patented- Oct. 22, 1929 TA'lE JOEE n. Yomvc,

ATENTI OFFICE CQMPAINY, 01F TOLEDO, OHIO, A CORPORATION OF OHIO POWER-IIJFIVEN SL'USH PUMP Application filed April 20,

- My invention relates to pumps having a plurality of pump cylinders and pistons.

It is one object of this invention to provide a pump of the charactenjust described whose pistons are driven by separate crank shafts actuated from a common source. Other objects relate to constructional details which permit the ready assembling of the elements of the pump.

Referring to the accompanying drawing, Fig. 1 is a longitudinal vertical section of a pump embodying this invention, the right-' hand end of the view being in side elevation; Fig. 2, a section on the line 2-2 on Fig. 1; Fig. 3, a sectional view showing the manner of getting the first crank shaft into the casing; and Fig. 4, a view like Fig. 3 but showing the manner of getting the second crank shaft into the casing, the two cranks being slightly to the left of their final positions which are shown in Fig. 2.

'On the drawings, 10 designates a drive shaft mounted on roller bearings 11 held by i the caps 12 secured in holes 13 in the sides of the casing 14. Externally of the casing the shaft 10 has a wheel 15, for example. Vt ithin the casing the-shaft has near its ends and the sides of .thefcasing the pinions 16 and 17 meshing respectively with the spur gears 18 and 19 on the respective crank shafts 20 and 21. The' shaft 21 has the crank 22 connected by the pitman 23 to the pivot pin 24 in the crosshead'25 slidable in the guide-26. The crosshead 25 has attached thereto the piston rod 27 which is connected to the pump piston 28' reciprocable in the pump cylinder 29. v

The crank shaft 20 has the crank 30which operates the pitman 31 connected by pivot pin 32 to the cross-head 33. The cross-head 33 has attached thereto the piston rod 34 which is connected to the piston 35 reciprocabl'e in the pump cylinder 36 contiguous with the cylinder 29 and parallel therewith.

The outer end 37 of the shaft 20 has the antifriction bearing 38 niounted in-the cap 39 secured in the hole 40 in the side of the casing 14. The outer end 41 of the shaft 21 has the antifriction bearing 42 mounted in the .cap 43 secured in the hole" 44 in the oppodriving Wheel, as the spur gear 1928. Serial No. 271,436. I

site side of the casing 14, the two crank shafts being horizontally alined.

The inner ends 45 and 46 of the respective shafts 20 and 21 are opposite each other and providedwith the antifriction bearings 47 and 48, which lie in the recess 49 in the upper end of the center bearing support 50. 51 is the cap for the bearing support. It rests on the upper portions of the antifriction bearings or rings 47. and 48 and is connected to the support by the bolts 52 which preferably clamp the outer rings or members of the bearings between the cap 51. and the support 50.

The casing 14 has the removable cover 53 which when removed afl'ords access to the interior of the casing for inserting and removin the crank-shafts and for fastening the ca?) 51 to the support and removing it therefrom and for attaching the pitmen to the crank shafts and removing and repairing them.

To assemble the parts, the cover 53 and the cap 51 having been removed, one of the crank shaft-s, as 20, is lowered into the casing with its antifriction bearings 38 and 47 thereon. The end 37 of the shaft is brought into line with the hole 40 and the end 45 over the recess 49. Then the crank-shaft is moved longitudinally to'the left so that its end 37 and bearing 38 enter the hole 40 into which they are slid to the left beyond their final positions. In Fig. 4 the shaft 20 is shown slid 'to the left about as far as it can go before the gear 18 engages the side of the casing. In this position, the end 45 of the crank 20 rests in the recess 49, its right-hand terminal being to the left of the center of the recess,,so that, when the shaft 21 is lowered into the casing, its end 41 may escape hitting the inner face of the casing and its inner end 46 may be lowered into the recess 49 in line with the end 45 of the shaft 20, as shown in Fig. 4. The parts being as in Fig. 4, the shafts 20 and 21 are moved longitudinally to the right so that the end 41 enters the hole 44 and the end [37 moves nearly an equal distance to the right.

i The ends 45 and 46 are separated by the an nularspacer 55 which engages the outer ring est the gear 15, moving I crank shafts might from accuracies members of the bearings 47 and 48. The cup- ,shaped caps 39 and 43 are slid intothe holes 40 and'44 and there receive the bearings '38 and 42, the caps being afterward secured to the casing by the screws 54b The cap 51 is placed over the bearings 47 and 48 and the spacer and secured in place by the bolts 52.

Fig. 2 shows one of the cranks having a ninety degree angle of lead over the other. It may be desirable to change this angle which is readily done by removing the cap 12 nearthe shaft 10 endwise until the pinlons are out of mesh With the ;gears 18 and 19, and then rotating one of 20,

the crank shafts so as to give one of the cranks the desired angle of lead, after which the I shaft 10 and the cap 12 are restored to their normal places. Alternatively, one of the be moved so as to take its pinion out of mesh and then rotated the desired angle. This could be done after removing the cap 51' and the pitman on the crank shaft to be moved. The parts could be moved to the position shown in Fig. liftthe shaft 21 sufiiciently to make its gear 19 escape from the pinion 17, whereupon the shaft 21 may be rotated as desired.

If thejcrank shafts 20 and 21 were integral, it would bewell nigh impossible to make the two pinions 16 and 17 mesh with the two gears 18 and 19 so that the load will be equally distributed through both pairs of gears. With the two unit crank shafts as shown each crank is driven by the shaft 10 just as effectively as if the other were not present. The construction shown permits slight deviations without disturbing the load conditlons.

I claim 1. In a pump,

' integral portions of its sides, a bearing support between the holes, two separate crank shafts, bearings in-the holes to support the outer ends of the crank shafts, bearings carried by thesaid central support for supporting the inner ends of the crank shafts, a pit- .man actuated by each crank shaft, and a pump piston operated by each pitman, the inner ends of the shafts projecting sulficiently so that, when the inner end of either shaft is in the center support, theouter end thereof with the companion gear 4, when it would be easy toa casing havingtwo holes in ing the inner ends of the crank shafts, a pitman actuated by each crank shaft, and a pump piston operated by each pitman, the inner ends of the shafts projecting sufiicient- 1y so that, when the inner end of either shaft is in the center support, the outer end thereof may be arranged in position, to enter the adjacent hole-in the casing and the outer ends of the said shafts projecting sufiiciently so that the outer end of the said shaft may be moved outwardly into the said hole to allow the other shaft to have its inner end on the said center support while its outer end is arranged in position to enter the adjacent hole in the casing.

In testimony whereof I hereunto affix my signature.

JOHN A. YOUNG.

' may be arranged in position to enter the adintegral portions of its sides, a bearing sup- I port between the holes,

shafts,

jacent hole in the casing. I

2. In a pump, a casing having two holes in two separate crank holes tosupport jthe shafts, bearings carsupport for supporthearings in the outer ends of the crank rind bv the said central 

